This is the small general use sub that is designed to support infantry and aid in underwater raids. both sides of this sub have equipment slots and other harnesses, allowing infantry cargo and weapons to be easily stored on the sub. the sub can "hold" up to 4 infantry, but really they just hold onto the outside. the sub itself is armed with two repeating spearguns on the bottom and 2 torpedo ducts near the cockpit. the cockpit is clearly not sealed from the water, so the pilot needs to be an underwater infantry as well. moving much faster than infantry these subs are almost always used to aid in the overall infantry's movement and even attack capabilities. since they are only light underwater infantry shuttles they are not well armored. the torpedo ducts have doors that open, to ensure nothing jams the ducts before firing. i also made a simple dioramma of this sub carrying 2 underwater infantry through some coral reefs.